The Grammy's rejected the Beyonce song for the country category, but the CMAs accepted it. The CMAs also love a lot of modern county when, in my mind at least, it's nothing more than pop in a cowboy hat.
This Stapelton song just sounds like a blues song. If you forget about the CMAs, and forget who wrote it, and just heard it with no context, I think pretty much everyone would call it a blues song.